Electric caldron



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ELECTRIC GALDRONS I Filed March 10, 1945 3 Sheets-Sheet s Patented July30, 1946 UNITED STATES PATENT OFFICE ELECTRIC CALDRON Bcrtelle I. Winn,Yonkers, N. Y.

Application March 10, 1945, Serial No. 581,973

4 Claims.

The present invention relates to new and useful improvements in domesticelectrical appliances for use particularly in rendering fat from meatscraps, although it will be understood, of course, that the device ma beused for any other purpose for which it may be found adapted.

The primary object of the invention is to provide, in a device of thecharacter described comprising an outer container and an inner containerremovably mounted therein, electric means of a unique construction andarrangement in said outer container for rapidly and uniformly heatingthe inner container and the contents thereof to the desired temperature.

Other objects of the invention are t provide an electric caldron of thecharacter set forth which will be comparatively simple in construction,strong, durable, compact, light in weight, portable, attractive inappearance, economical in operation, which may be safely handled, andwhich may be manufactured at low cost.

All of the foregoing and still further objects and advantages of theinvention will become apparent from a study of the followingspecification, taken in connection with the accompanying drawingswherein like characters of reference designate corresponding partsthroughout the several views, and wherein:

Figure 1 is a view in side elevation of an electric caldron constructedin accordance with the present invention.

Figure 2 is a view in front elevation of the device.

Figure 3 is a view in vertical section, taken substantially on the line3-3 of Figure 1.

Figure 4 is a view in horizontal section, taken substantially on theline 4-4 of Figure 3.

Figure 5 is a fragmentary view in elevation of a portion of the interiorof the outer container.

Referring now to the drawings in detail, it will be seen that theembodiment of the invention which has been illustrated comprises a standwhich is designated generally by reference character I. The stand Iincludes a base 2 which may be mounted on any suitable support, The base2 is substantially U-shaped to accommodate a suitable receptacle (notshown) to receive the fat. Rising from the bight portion of the base 2is a standard 3.

Mounted over the base 2 on the upper end portion of the standard 3 is asubstantially frustoconical outer container 4. As illustrated toadvantage in Figure 3 of the drawings, the bottom of the outer container4 has formed therein a centrally located opening 5. The container 4includes a shell 6 .of metal or other suitable material, Mounted in theshell 6 is a lining I of suitable refractory material. A heat insulatingelement 8 of asbestos or other suitable material is interposed betweenthe lining l and the shell 6.

The refractory lining I has formed integrally with its inner periphery aspiral of substantially pyramidal radiant 23 which are immediatelyadjacent each other. The radiants 23 support a coiled electric elementID in the refractory lining I and project inwardly therebeyond.

The container 4 accommodates a removable, substantially conical innerreceptacle or container I I which rests on the points of the radiants23. Depending from the lower end of the inner container II is adischarge spout I2 which projects downwardly through the opening 5. Amanually operable valve I3 controls the discharge spout I2.

The inner container I I extends above the open top of the outercontainer 4 and has fixed thereon a handle I4. A removable lid I5 isprovided for the inner container II. A suitable lifting knob or handle[6 is formed integrally with the lid I5. Formed in the under surface ofthe lid I5 is a pluralit of annular grooves or channels I1 providinglands or eaves 9.

The element I0 of the outer container 4 is electrically connected to asuitable socket I8 on said container. The socket I8 receives a plug I9on one end of an attachment cord 20, A control switch 2| is interposedin the cord 20. A conventional plug 22 is provided on the other end ofthe cord 20.

It is thought that the operation of the device will be readily apparentfrom a consideration of the foregoing. Briefly, when rendering or fryingfat, the meat scraps are placed in the inner container II and the lid I5is mounted thereon. A suitable receptacle is placed within the confinesof the base 2 beneath the discharge spout I2, and the valve I3 isopened. The switch 2| is then closed for heating the electric elementI0. Thus, the inner container II and the contents thereof are broughtrapidly and uniformly to the desired temperature .for extractin the fattherefrom without stirring or basting, the scraps falling to newpositions of contacts and exposures. The rendered fat flows downwardlyby gravity in the inner container I I and is discharged through thespout I2 into the aforementioned receptacle therebeneath. Theconstruction and arrangement of the element I0, th'e radiants 23, etc.,is such that maximum heating efliciency is bad through centripetalradiation, etc., due to the conical shape of the container and thepyramidal shape of the radiants 23. The lid l5, which is a highlyimportant and desirable feature of the invention, effectively retainssubstantially all heat, odors, vapors, etc., in the caldron, in additionto confinin spatterings thereto. Such spatterings, vapors, etc.,gravitate to the lands 8 and drop onto the material in the caldron,being thus prevented from running to the sides and overflowing, as wouldoccur if the under surface of the lid l5 were fiat or substantially so.The annular lands 9 also prevent the fat from running out should the lidbecome tilted. Further, the a .1- nular concentric grooves or channel llare formed to provide substantially parabolicsurfaces which reflect theheat downwardly from the under surface of the lid l5. When substantiallyall radiants integral with the lining, said radiants retaining theelement in position and projecting inwardly beyond said element, asubstantially conical inner container removably mounted in the outercontainer and resting on the radiants to be heated by the element andsaid radiants, and a valve-controlled discharge spout depending from theinner container and extending downwardly through the opening in theouter container.

3. An electric caldron of the character described comprising a stand, aubstantially frustoof the fat has been recovered, the valve l3 may- 1 beclosed or left open and the inner container it may be readily removedfrom the outer container 3 through the medium of the handle it foremptying and cleaning. When the device is used for purposes other thanrendering'fat, the valve is may be closed or left open.

It is believed that the many advantages of an electric caldronconstructed in accordance with the present invention will be readilyunderstood, and although a preferred embodiment of the device isas'illustrated and described, it is to be understood that changes in thedetails of construction and in the combination and arrangement of partsmaybe resorted to which will fall within the scope of the invention asclaimed.

" What is claimed is:

"1.,An electric caldron of the character described comprising asubstantially frusto-co-nical ou't'er container including a refractorylining, an electric heating element in the 1ining,'substantiallypyramidal radiants integral with the lining, said radiants retainin theelement in position and projecting inwardly therebeyond, and a substantially conical inner container removably mounted in the outercontainer and adapted to be heated by "the element and the radiants,said inner container resting on the points of ra'cliants. I

2. An electric caldron of the character described'corn'prising a stand,a substantially frustoconical outer container mounted on the stand andhaving an opening in its bottom, said outer container including a'shell,a refractory lining in said shell, an insulating medium between saidlining and the shell, an electric heating element mounted in the lining,substantially pyramidal conical outer container mounted on the stand andhaving an opening in its bottom, said outer container including a shell,a refractory linin in said shell, an insulating medium between saidlining and the shell, inwardly directed annular locking flanges on theends of said shell for locking said insulatin medium in position, anelectric heating element mounted in the lining, substantially pyramidalradiants integral with the lining, said radiants retaining the elementin position and projecting inwardly beyond said element, a substantiallyconical inner container removably mountedin the outer container andresting on the radiants to be heated by the element and said radiants,and a valve-controlled discharge spout depending from the innercontainer and extend ing downwardly through the opening in the outercontainer.

4. An electric caldron of the character described comprising a stand, asubstantially frustoconical outer container mounted on the stand andhaving an opening in its bottom, said outer container including a shell,a refractory lining inv said shell, an insulating medium between saidlining and the shell, inwardly directed circular lockin flanges formedon the ends of said shell for locking said insulating medium inposition,

a downwardly extending lip on the end of said upper flange adapted toseat on the top of said refractory lining to lock the same in saidshell, an electric heating element mounted in the lining, substantiallypyramidal radiants integral with the lining, said radiants retaining theelement in position and projecting inwardly beyond said element, asubstantially conical inner container removably mounted in the outercontainer and resting on the radiants to be heated'by the element andsaid 'radiants, and a valve-controlled discharge spout depending fromtheinner container and extending downwardly through the opening in theouter container. g

BERTELLE I. WINN.

